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-rw-r--r--mesonbuild/compilers/cpp.py11
1 files changed, 11 insertions, 0 deletions
diff --git a/mesonbuild/compilers/cpp.py b/mesonbuild/compilers/cpp.py
index 44155d1..057a39a 100644
--- a/mesonbuild/compilers/cpp.py
+++ b/mesonbuild/compilers/cpp.py
@@ -692,6 +692,17 @@ class VisualStudioCPPCompiler(CPP11AsCPP14Mixin, VisualStudioLikeCPPCompilerMixi
del args[i]
return args
+ def get_always_args(self) -> T.List[str]:
+ args = super().get_always_args()
+
+ # update the __cplusplus #define to match the version given on the
+ # command line with /std:NNN, but only for versions above 15.7 (2017)
+ # https://docs.microsoft.com/en-us/cpp/build/reference/zc-cplusplus?view=msvc-160
+ if version_compare(self.version, '>= 15.7'):
+ args.append('/Zc:__cplusplus')
+
+ return args
+
class ClangClCPPCompiler(CPP11AsCPP14Mixin, VisualStudioLikeCPPCompilerMixin, ClangClCompiler, CPPCompiler):
def __init__(self, exelist: T.List[str], version: str, for_machine: MachineChoice,
is_cross: bool, info: 'MachineInfo', target: str,